A pneumatic tire having a non-symmetric pattern in which a land ratio Lo of an outer tread surface portion To facing towards the outside of a vehicle from a tire equator C is set to be larger than a Land ratio Li of an inner tread surface pattern Ti facing towards the inside of the vehicle from the tire equator C; and concave grooves 9 extending substantially in a circumferential direction of the tire, formed in an outer tire side region Yo that is located between a grounding end Eo of the outer tread surface portion To and the maximum width position M of the tire facing towards the outside of the vehicle.